Improvement in blocks for top-prop joints for carriages



JonNfJ-W1LsoN,or NEW YORK, Nqr.

Letters Patent No. 113,477, dated April 4, 1871.

EMPROVEMENT IN BLOCKSv FOR TOP-PROP JOINTS FOR CARRIAGES.

The Schedule referred to in these Letters Patent andmaking -part o'f the same.

To all whom it may concern:

Be it known that I, J OHN J. WILSON, ofthe city and State of New York, have invented au Improvement in Prop-Blocks for Carriages; andthe following is declared to be a. cox-reet description et' the saine.

A prop-block jlias heretofore been made of India rubber, with a cushion near'the center for the bows of thecarriage-top to rest upon, and with flanged heads or ends. ln applying these prop-blocks diliionlty arises in conseqlienoqot' the carriage-irons varying in length to suit the shapeof the carriage-top and of the carriage itself; and sometimes the cushioned upper surface does not properly sustain the bow.

My invent-ion is made with reference to removing the aforesaid diioulties; and consists in an elastic prop-block tube, made .olf India rubber, of a uniform section throughout, or nearly so, and with a longitudnal rib running its entire len'gth and forming the cushion for the bows. Y

This prop-block tube is a new article of manufacture, that is much superior to the prop-blocks heretofore made, because it can be ont oEt in lengths to suit the length-ot' prop-iron, with the end uex-t the carriage either at right angles or at an inclination, so

' as to fill up the entire space Vbet-Ween the body of the carriage and the prop, thereby giving :theater finish and an extended bearing for the carriage-.bow and greatly facilitating the manufacture and use of said elastic propbleek Figure 1 is a. plan of said prop-block;

Figure 2 sh'ows the strip or tube of rubber p'revious to beingout into lengths for use; and

Figure3 is a cross-.section of the prop-blocktube.

The hole a 'through the prop-block tube should bel Y polygonal, corresponding with the carriage-iron, and the tube Aitself` is made ot' India rubber, oi`` a cylindrical form at b, and with a cushion, c, upon the np,- per part for the bows ot the carriage-top to rest upon.

This prop-block tube is made of suitable length and of uniform sectional shape throughout, or nearly so, and the prop-block is to be out of? so as to fit upon the carriage-iron and lill the space allotted to it; e itwill be apparent that this 'prop-block tube is adapted to anylength of ironand shape of body of the pin'- ticular carriage to which it is attached.

This prop-block tubo is made with an elastic finish t0 the surface, formed by varnishiug such tube in the same manner as India-rubber shoes, so that the propblock will not require to be painted; lirencc the surface will not crank or become injured in use.

By having the prop-block tubes madein lengths sulcient fora number ofprop-blocks the oost of manufacture is lessened, because there is not so inn-onhandling as with separate pieces; and this tube can be ont Vu p in lengths as required, and thus preventany waste of material, and at the same time the labor in fitting the prop-block in place is lessened. v

I claim as my invention- The prop-block tube, made of India rubber, in lengths of a uniform or nearly uniform section throughout, and with the elastic cushion upon its upper surface, as and for the purposes set forth.

Signed by lne-this 6th dayof March, A. D. 187].

JOHN J. WILSON.

Wituessesz Unas. H. SMITH,

GEO. T. PINoKNnY. 

